President Bush has said that he does not need approval from the UN to wage war, and I'm thinking, well, hell, he didn't need the approval of the American voters to become president, either.
David LettermanEarlier today, we got a call from Stephen Hawking. He's a genius, and after 6,028 shows he ran the numbers and he said it works out to about eight minutes of laughter.
David LettermanYou like science? You enjoy science? Always use it for good, never for evil. Can you promise me that?
David LettermanI'll be honest with you. It's beginning to look like I'm not going to get 'The Tonight Show.'
David Letterman